-x² ·(-x)³+3x³ ·(-x)²—4(-x)(-x)^4怎么算?
-x² ·(-x)³+3x³ ·(-x)²—4(-x)(-x)^4怎么算?
2道分式计算[(x+4)(x-2)]/x³+2x²+x÷[(x-2)/x·(x+4)/(x+1)]2
(3x²)³-7x³[x³-x(4x²+1)]
化简:-3x(x²+1)-[x³-x(4x²+1)].
f(x)=1+x-x²/2+x³/3-x^4/4+…+x^2013/2013
计算[(3X/(X-2))-(X/(X+2))]·((X²-4)/X)
(-x+2x²+5)+(4x²-3-6x)怎么算?
2x^5·x^5+(-x)²·x·(-x)³计算
x³-x²+x-1怎么成为(x-1)(x²+1)
(-2x²)³+4x³×x³
4x²-1/3x²-x·9x³-x/2x^4-x³计算 急
化简{x²-2x分之x+2-x²-4x+4x分之x-1}除以X分之(x-1)(X-4)乘以(2-x)